Buggy code:
public abstract class ParentComponentMonitor extends Monitor { private static final Log log = LogFactory . getLog ( ParentComponentMonitor . class ) ; protected DependencyTree startupDependencyTree ; protected DependencyTree scalingDependencyTree ; protected Map < String , Monitor > aliasToActiveMonitorsMap ; protected List < String > pendingMonitorsList ; protected List < String > inactiveMonitorsList ; protected List < String > terminatingMonitorsList ; public ParentComponentMonitor ( ParentComponent component ) throws DependencyBuilderException { } public void startDependency ( ParentComponent component , List < String > instanceIds ) { } public void startDependency ( ParentComponent component , String instanceId ) throws MonitorNotFoundException { } public boolean startDependencyByInstanceCreation ( String childId , String instanceId ) throws MonitorNotFoundException { } public boolean startDependency ( String id , String instanceId ) throws MonitorNotFoundException { } public void startDependencyOnTermination ( String instanceId ) throws MonitorNotFoundException , TopologyInConsistentException , PartitionValidationException , PolicyValidationException { } private boolean startDependency ( List < ApplicationChildContext > applicationContexts , List < String > instanceIds ) { } private boolean startDependency ( List < ApplicationChildContext > applicationContexts , String instanceId ) throws MonitorNotFoundException { } protected String generateInstanceId ( ParentComponent component ) { } protected void onChildActivatedEvent ( String eventId , String instanceId ) { } protected void onChildInactiveEvent ( String childId , String instanceId ) { List < ApplicationChildContext > terminationList ; Monitor monitor ; terminationList = this . startupDependencyTree . getTerminationDependencies ( childId ) ; ServiceReferenceHolder . getInstance ( ) . getGroupStatusProcessorChain ( ) . process ( this . id , this . appId , instanceId ) ; if ( ( ( this . startupDependencyTree . getTerminationBehavior ( ) ) == ( TerminationBehavior . TERMINATE_ALL ) ) && ( ( terminationList . size ( ) ) == ( this . aliasToActiveMonitorsMap . size ( ) ) ) ) { if ( ( this . parent ) != null ) { <START_BUG> ApplicationBuilder . handleGroupTerminatingEvent ( this . appId , childId , instanceId ) ; <END_BUG> } else { sendTerminatingEventOnNotification ( terminationList , childId , true , instanceId ) ; } ParentComponentMonitor . log . info ( ( ( ( "The<seq2seq4repair_space>group" + childId ) + "<seq2seq4repair_space>has<seq2seq4repair_space>been<seq2seq4repair_space>marked<seq2seq4repair_space>as<seq2seq4repair_space>terminating<seq2seq4repair_space>" ) + "due<seq2seq4repair_space>to<seq2seq4repair_space>all<seq2seq4repair_space>the<seq2seq4repair_space>children<seq2seq4repair_space>are<seq2seq4repair_space>to<seq2seq4repair_space>be<seq2seq4repair_space>terminated" ) ) ; } else { sendTerminatingEventOnNotification ( terminationList , childId , false , instanceId ) ; } } private void sendTerminatingEventOnNotification ( List < ApplicationChildContext > terminationList , String notifier , boolean terminateAll , String instanceId ) { } protected void onChildTerminatedEvent ( String eventId , String instanceId ) { } private boolean allDependentTerminated ( List < ApplicationChildContext > terminationList ) { } private boolean allParentTerminated ( List < ApplicationChildContext > parentContexts , String instanceId ) { } private boolean allParentActive ( List < ApplicationChildContext > parentContexts , String instanceId ) { } protected synchronized void markMonitorAsInactive ( String monitorKey ) { } protected synchronized void markMonitorAsTerminating ( String monitorKey ) { } protected synchronized void startMonitor ( ParentComponentMonitor parent , ApplicationChildContext context , List < String > instanceId ) { } public Map < String , Monitor > getAliasToActiveMonitorsMap ( ) { } public Monitor getMonitor ( String monitorId ) { } public void setAliasToActiveMonitorsMap ( Map < String , Monitor > aliasToActiveMonitorsMap ) { } public boolean hasActiveMonitors ( ) { } public boolean hasMonitors ( ) { } public boolean hasIndependentChild ( ) { } public List < String > getAliasToInActiveMonitorsMap ( ) { } public void setAliasToInActiveMonitorsMap ( List < String > inactiveMonitorsList ) { } public List < String > getTerminatingMonitorsList ( ) { } public void setTerminatingMonitorsList ( List < String > terminatingMonitorsList ) { } public AutoscaleAlgorithm getAutoscaleAlgorithm ( String partitionAlgorithm ) { } private class MonitorAdder implements Runnable { private ApplicationChildContext context ; private ParentComponentMonitor parent ; private String appId ; private List < String > instanceId ; public MonitorAdder ( ParentComponentMonitor parent , ApplicationChildContext context , String appId , List < String > instanceId ) { } public void run ( ) { } } }

Fix:
ApplicationBuilder . handleGroupTerminatingEvent ( this . appId , this . id , instanceId ) ;